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brain fog

[ breyn fog, fawg ]

noun

  1. a mental state marked by difficulty remembering, concentrating, or thinking clearly, often caused by exhaustion, stress, or illness: For new parents, fatigue and brain fog seem inevitable.

    He had so much brain fog that a single thought felt impossible.

    For new parents, fatigue and brain fog seem inevitable.

    Research has found that long COVID can cause brain fog and memory loss.



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Word History and Origins

Origin of brain fog1

First recorded in 1850–55; brain ( def ) + fog 1( def )

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